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Q: What is cramer rule?

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Yes, you can.

The history of linear algebra begins with Leibniz in 1693 who studied determinants. In 1750, Cramer invented a rule (Cramer's rule) for solving linear systems.

If you mean: 2x-y=5 and x-2y=1 then by multiplication, elimination and substitution it works out that x=3 and y=1

There are several methods. 1. graphing, then find the intersection. 2. Substitution (take one equation and solve for one variable, substitute that into the 2nd equation) 3. Elimination. Arrange both equations in standard form, arrange so that the coefficients on one of the variables are the same and subtract the 2 equations. 4. Cramer's rule, use matrices to solve.

write a rule as an equation

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In math, the purpose of Cramer's rule is to be able to find the solution of a system of linear equations by using determinants and matrices. Cramer's rule makes it easy to find a system of equations that have many unknown variables.

Yes, you can.

Cramer's rule is applied to obtain the solution when a system of n linear equations in n variables has a unique solution.

I suppose Cramer was looking for a generalized method to solve linear systems of equations. Using determinant's was his solution. I've posted a link to a neat site about Cramer's rule.

The history of linear algebra begins with Leibniz in 1693 who studied determinants. In 1750, Cramer invented a rule (Cramer's rule) for solving linear systems.

Cramer's rule makes it possible to evaluate a determinant without getting confused and making mistakes.

Cramer's Rule is a method for using Matrix manipulation to find solutions to sets of Linear equations.

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Of course, Gaussian Elimination!

Hal Cramer's birth name is Harold David Cramer.

Jacqueline Cramer's birth name is Jacqueline Marian Cramer.

No

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